Sponsored Content
Top Forums UNIX for Dummies Questions & Answers BASH: getting a script to "do" what's after "done" Post 302447996 by SilversleevesX on Wednesday 25th of August 2010 03:18:06 AM
Old 08-25-2010
Quote:
Originally Posted by agama
Did you notice that there is a missing double quote on the last echo in the script? I would have expected you to have seen an error, but the behaviour might be exactly as you described all caused by the missing quote.
Spot on, agama. I ran it with the fixed (?!) variables and such on a much smaller folder of files than I was "playing it on" before, and first thing to come up was "syntax error -- unexpected end of file." I cat'ed and immediately saw the missing double-quote. Never let it be said that coloured syntax formatting in a GUI text editor is an unqualified benefit -- sometimes the eye is so enwrapt in the colours that the mind is rendered blind to the errors staring one straight in the face!

Quote:
Originally Posted by agama
I don't know why it wouldn't toss an error to stderr, but if it isn't, or stderr is being redirected (I don't think you are), then it would appear not to be executing the commands after the done.
My bad there. I had stderr going out to /dev/null, anticipating that the only errors I'd have seen in stdout would have been related to the files "punch branded" by PhotoFiltre or some other maker-related error. I didn't see the eof error for that reason. It's not like BASH exactly allows one to pick and choose which kind, app error or shell syntax error, one gets to redirect (or is it? I certainly haven't seen any how-to's on this score). And even the author, Andreas Huggel, says error trapping in his app needs some looking at -- presently all you get is what the error/s is/are, not what file tossed them up. It's a matter of "feeding protein" to the -V option or a more file-conscientious rewrite of the whole error-reporting section of the code. No news yet as to whether Hr Huggel has made headway.

I made the fix, and tried again. It ran beautifully. Now, paradoxically, I'm thinking a better "cure" for PhotoFiltre EXIF software "branding" tags might not be to purge them, but to erase and rewrite them in the way that won't habitually create an error call in Exiv2. Ideally such a script would sync with a query at the top (return value of same stored in a variable) to the registry asking for the exact version number of PF right down to the build string. But that's a whole other lunch date,. Smilie

Thanks again for the help.


BZT

Last edited by SilversleevesX; 08-25-2010 at 06:54 AM.. Reason: Wrong helper's name - corrected.
 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Explain the line "mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`"

Hi Friends, Can any of you explain me about the below line of code? mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'` Im not able to understand, what exactly it is doing :confused: Any help would be useful for me. Lokesha (4 Replies)
Discussion started by: Lokesha
4 Replies

2. Shell Programming and Scripting

Simplify Bash Script Using "sed" Or "awk"

Input file: 2 aux003.net3.com error12 6 awn0117.net1.com error13 84 aux008 error14 29 aux001.ha.ux.isd.com error12 209 aux002.vm.ux.isd.com error34 21 alx0027.vm.net2.com error12 227 dux001.net5.com error123 22 us008.dot.net2.com error121 13 us009.net2.com error129Expected Output: 2... (4 Replies)
Discussion started by: sQew
4 Replies

3. Shell Programming and Scripting

awk command to replace ";" with "|" and ""|" at diferent places in line of file

Hi, I have line in input file as below: 3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL My expected output for line in the file must be : "1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL" Can someone... (7 Replies)
Discussion started by: shis100
7 Replies

4. Shell Programming and Scripting

how to use "cut" or "awk" or "sed" to remove a string

logs: "/home/abc/public_html/index.php" "/home/abc/public_html/index.php" "/home/xyz/public_html/index.php" "/home/xyz/public_html/index.php" "/home/xyz/public_html/index.php" how to use "cut" or "awk" or "sed" to get the following result: abc abc xyz xyz xyz (8 Replies)
Discussion started by: timmywong
8 Replies

5. Solaris

The slices "usr", "opt", "tmp" disappeared!!! Help please.

The system don't boot. on the screen appears following: press enter to maintenance (or type CTRL-D to continue)...I checked with format command. ... the slices "0-root","1-swap","2-backup" exist. ...the slises "3-var","6-usr" -unassigned. :( (16 Replies)
Discussion started by: wolfgang
16 Replies

6. UNIX for Dummies Questions & Answers

"Help with bash script" - "License Server and Patch Updates"

Hi All, I'm completely new to bash scripting and still learning my way through albeit vey slowly. I need to know where to insert my server names', my ip address numbers through out the script alas to no avail. I'm also searching on how to save .sh (bash shell) script properly.... (25 Replies)
Discussion started by: profileuser
25 Replies

7. UNIX for Dummies Questions & Answers

Using "mailx" command to read "to" and "cc" email addreses from input file

How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address and column 3 contains “cc” e-mail address to include with same email. Sample input file, email.txt Below is an sample code where... (2 Replies)
Discussion started by: asjaiswal
2 Replies

8. Shell Programming and Scripting

Bash script - Print an ascii file using specific font "Latin Modern Mono 12" "regular" "9"

Hello. System : opensuse leap 42.3 I have a bash script that build a text file. I would like the last command doing : print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt where : print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies

9. AIX

Apache 2.4 directory cannot display "Last modified" "Size" "Description"

Hi 2 all, i have had AIX 7.2 :/# /usr/IBMAHS/bin/apachectl -v Server version: Apache/2.4.12 (Unix) Server built: May 25 2015 04:58:27 :/#:/# /usr/IBMAHS/bin/apachectl -M Loaded Modules: core_module (static) so_module (static) http_module (static) mpm_worker_module (static) ... (3 Replies)
Discussion started by: penchev
3 Replies
SHELL-QUOTE(1p) 					User Contributed Perl Documentation					   SHELL-QUOTE(1p)

NAME
shell-quote - quote arguments for safe use, unmodified in a shell command SYNOPSIS
shell-quote [switch]... arg... DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands or files with embedded white space or shell globbing characters safely. Here are a few examples. EXAMPLES
ssh preserving args When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and passes them to "$SHELL -c". This doesn't work as intended: ssh host touch 'hi there' # fails It creates 2 files, hi and there. Instead, do this: cmd=`shell-quote touch 'hi there'` ssh host "$cmd" This gives you just 1 file, hi there. process find output It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote: eval set -- `find -type f -print0 | xargs -0 shell-quote --` debug shell scripts shell-quote is better than echo for debugging shell scripts. debug() { [ -z "$debug" ] || shell-quote "debug:" "$@" } With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can. save a command for later shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are things the user can't pass through), you can do something like this: user_switches= while [ $# != 0 ] do case x$1 in x--pass-through) [ $# -gt 1 ] || die "need an argument for $1" user_switches="$user_switches "`shell-quote -- "$2"` shift;; # process other switches esac shift done # later eval "shell-quote some-command $user_switches my args" OPTIONS
--debug Turn debugging on. --help Show the usage message and die. --version Show the version number and exit. AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions. AUTHOR
Roderick Schertler <roderick@argon.org> perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)
All times are GMT -4. The time now is 06:39 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy